Feasibility and safety of minimally invasive multivisceral resection for T4b rectal cancer: A 9-year review

Table 1 Clinical demographics of patients who underwent multivisceral resection, n (%)

	Total (n = 46)	Minimally invasive (n = 34)	Open (n = 12)	P valuea
Age, yr	68.0 (44.0-85.0)	68.0 (44.0-85.0)	67.5 (45.0-85.0)	0.573
Sex, male (%)	21 (45.7)	15 (44.1)	6 (50)	0.725
BMI, kg/m2	22.5 (12.6-37.9)	22.0 (12.6-32.1)	23.3 (16.4-37.9)	0.708
ASA score, median	2.0 (1.0-3.0)	2.0 (1.0-3.0)	2.0 (1.0-3.0)	0.966
1	13 (28.3)	10 (29.4)	3 (25.0)
2	27 (58.7)	19 (55.9)	8 (66.7)
3	6 (13.0)	5 (14.7)	1 (8.3)
Co-morbidities
Hypertension	23 (50.0)	17 (50.0)	6 (50.0)	1.000
Hyperlipidemia	18 (39.1)	14 (41.2)	4 (33.3)	0.632
Diabetes mellitus	11 (23.9)	9 (26.5)	2 (16.7)	0.494
Ischemic heart disease	3 (6.5)	3 (8.8)	0 (0)	0.287
Previous abdominal surgery	7 (15.2)	5 (14.7)	2 (16.7)	0.871
Neoadjuvant chemotherapy	31 (67.4)	25 (73.5)	6 (50.0)	0.135
Neoadjuvant radiotherapy	36 (78.3)	29 (85.3)	7 (58.3)	0.052
Previous local recurrence	3 (6.5)	2 (5.9)	1 (8.3)	0.768

^aStatistical significance is expressed as P < 0.05.

All continuous variables were expressed as median (range) unless specified. All categorical variables were expressed as n (%) unless otherwise specified. ASA: American Society of Anesthesiologists; BMI: Body mass index.